Usecase Overview

• Business Goal: Enable release managers to safely deploy plugins to production tenants using CI/CD pipeline with canary strategy, completing verification and expansion within 30 minutes, with automatic rollback within 5 minutes on anomalies.
• Success Metrics: Canary phase core metrics deviation <5%; canary to full deployment duration ≤30 minutes; restore old version within 5 minutes after rollback trigger; deployment success rate ≥98%.
• Scenario Association: Supports Main Scenario Stage 3, ensuring post-approval versions can expand to production tenants in an observable and rollback-able manner.

Through standardized canary orchestration, monitoring and rollback mechanisms, we ensure the impact on tenant business during new version rollout is controllable and measurable.

Context & Assumptions

• Prerequisites
  • Feature Flags publish-canary-orchestrator, plugin-gray-observability, rollback-automation are enabled.
  • Release plan has been generated by approval sub-scenario, including canary tenant list, window, rollback contacts.
  • Monitoring, logging, alert channels configured, able to associate tenants & plugin versions.
  • CLI/Console has permissions to trigger deployment, view status and execute rollback.
• Input/Output
  • Input: Release plan ID, target plugin version, canary strategy parameters (ratio, batch, threshold), notification template.
  • Output: Canary/full deployment status, metrics report, rollback execution records, tenant notifications, audit log links.
• Boundaries
  • Does not handle offline package import or Marketplace listing.
  • Does not cover plugin internal business validation scripts, only focuses on release orchestration, observation & rollback.

Solution Blueprint

Architecture Decomposition

Layer	Main Components/Modules	Responsibility	Code Entry
Canary Orchestration Layer	internal/publish/pipeline/canary_orchestrator.go	Phase control, batch expansion, failure retry, state persistence	services/publish/pipeline
Observation & Alert Layer	internal/publish/telemetry/metrics.go	Metrics collection, threshold judgment, alert push, report generation	services/publish/telemetry
Rollback Execution Layer	internal/publish/rollback/manager.go	Rollback strategy evaluation, execution scripts, audit trails	services/publish/rollback
CLI/Console Layer	packages/cli/src/commands/publish/deploy.ts	Trigger canary/full, display real-time status, manual intervention	packages/cli
Notification & Communication Layer	internal/notify/publish/broadcast.go	Release notifications, change log push, tenant confirmation	services/notify/publish

Process & Sequence

1. Step 1 – Canary Initialization: Verify release plan, lock target tenants, metrics thresholds & rollback scripts; warm up monitoring dashboards.
2. Step 2 – Deploy to Canary Group: CI/CD pushes plugin to first batch tenants, performs health checks and starts metrics collection.
3. Step 3 – Observation & Decision: Continuously compare canary vs baseline metrics, proceed to next batch if standards met; trigger automatic rollback or wait for manual commands on anomalies.
4. Step 4 – Full Expansion & Archive: After reaching final state, expand to 100%, generate change logs, archive audits & operational reports.

Contracts & Interfaces

• Inbound APIs / Events
  • powerx publish deploy --strategy canary — Trigger canary deployment.
  • POST /internal/publish/phase/{canary,full} — Pipeline phase advancement.
  • POST /internal/publish/rollback — Execute rollback operation.
• Outbound Calls
  • POST /internal/monitoring/query, POST /internal/monitoring/alert — Pull/push monitoring metrics.
  • POST /internal/notify/publish — Send tenant notifications & change logs.
  • POST /internal/compliance/audit — Record operations & results.
• Configs & Scripts
  • config/publish/canary_strategy.yaml — Canary batch, threshold, timeout strategies.
  • config/monitoring/publish_dashboards.json — Monitoring dashboard & metrics mapping.
  • scripts/workflows/publish-canary-smoke.mjs — Quick verification scripts.

Implementation Checklist

Item	Description	Status	Owner
Canary Orchestration	Support multi-batch strategies, failure retry, phase visualization	[ ]	Matrix Ops
Metrics Collection	Integrate with monitoring platform, deviation calculation, threshold configuration	[ ]	Alex Wei
Automatic Rollback	Support batch rollback, full rollback, audit sync	[ ]	Matrix Ops
Notifications & Reports	Canary status notifications, change logs, operational reports	[ ]	Alex Wei
CLI/Console	Real-time status display, manual takeover & approval tokens	[ ]	Michael Hu

Testing Strategy

• Unit: Orchestration state machine, batch scheduling, rollback decision, metrics threshold calculation.
• Integration: Run scripts/workflows/publish-canary-smoke.mjs, covering success & exception paths.
• End-to-End: Reproduce meta document use cases C-1/C-2, verify expansion success & exception rollback.
• Non-functional: Concurrent deployment of multiple plugins, long-duration canary monitoring, retry & recovery under network jitter.

Observability & Ops

• Metrics: publish.gray.duration_minutes, publish.gray.error_rate, publish.gray.rollback_total, publish.full.deployment_minutes.
• Logs: Record batch, tenant, version, metrics deviation, rollback reasons; sensitive information masked before writing audit.
• Alerts: Canary error rate >5%, metrics missing >5 minutes, rollback failure, expansion timeout >30 minutes trigger P1.
• Dashboards: Publish Canary Dashboard, Rollback Drill Dashboard, workflow-metrics.mjs.

Rollback & Failure Handling

• Rollback Steps: Rollback batch by batch; if observed metrics continue abnormal, execute full rollback and restore old version artifacts.
• Remediation Measures: Automatically generate post-mortem reports, notify release manager & relevant teams, trigger approval to replan rollout.
• Data Repair: Run scripts/workflows/publish-canary-reconcile.mjs to align pipeline records, metrics & audit logs.

Follow-ups & Risks

Risk/Issue	Impact	Mitigation	Owner	ETA
Inconsistent metric naming with third-party monitoring	Canary observation accuracy	Establish metric mapping table and sync configuration templates	Alex Wei	2025-12-14
Rollback scripts lack multi-tenant concurrency support	Rollback efficiency	Extend scripts, add concurrency control & idempotent checks	Matrix Ops	2025-12-22
Manual takeover process lacks approval integration	Risk control compliance	Integrate with approval system for multi-factor verification & audit	Grace Lin	2026-01-05

References & Links

• Scenario Document: docs/scenarios/plugin-lifecycle/SCN-DEV-PLUGIN-CICD-CANARY-001.md
• Main Scenario: docs/scenarios/plugin-lifecycle/SCN-DEV-PLUGIN-PUBLISH-001.md
• Meta Design: docs/meta/scenarios/powerx/plugin-ecosystem/plugin-lifecycle/plugin-publish-and-release/primary.md
• Configuration: config/publish/canary_strategy.yaml, config/monitoring/publish_dashboards.json